I am writing this email as Chair of your supervisory committee. This email is to let you know that you have passed the take home portion of your exam. Congratulations!
After considerable discussion and debate, your committee has agreed to also pass you on your lab exam; however, they have asked that I let you know that this was an exceptionally poor exam, and they are very disappointed in your performance.
Translation: Congratulations you have a masters degree, but you still suck.